Being not a citizen or resident of Canada, I am sure I do not care how Canada handles people who illegally enter Canada. Canada can do whatever the hell it wants in whatever way it sees fit.
As long as you're ok, who care, eh?
When it comes to public policy enacted by elected leaders of a nation in which I do not have a vote, whether I'm okay or not okay has nothing to do with my realization that I have no right to stick my nose into or raise my voice about that country's policy decisions.
I don't want Canadians, French, British, or citizens of any other country with whom the U.S. is an ally making be an open public debate in their country what the U.S. what policies it should espouse, advocate or implement, how and when. I can accord them the same freedom to make their policy decisions without my input. If the policy makers in the respective allied countries solicit one another's input in that regard, fine, but that's a different circumstance.
I also don't cotton to my neighbors inserting themselves into what goes on at my home, and I accord to them the same courtesy. Moreover, in my home, what goes on at the neighbors' house isn't a topic of conversation unless I happen to be a direct party to the goings on. I have nothing to say about the color they paint their shutters, what plants they decorate their yard with, what time they come and go, how they raise their kids, etc. That's their business, not mine, and I have better things to do than stick my nose into or invest my time and energy thinking about their business.
Unless they violate a covenant to which we've both agreed, I have nothing to say about what they do. It works that way with Canada too.